Are you trying to connect to your home or office network, but your phone stubbornly ignores Wi-Fi? Or, your smartphone "sees" the network but can't connect, displaying an error. Authentication... or Saved, WPA/WPA2 protectionThis problem is familiar to one in five users—and it's not always related to a phone malfunction. In 70% of cases, router settings, IP address conflicts, or software glitches are to blame.
In this article we will look at all possible reasons, which can cause a phone to stop connecting to Wi-Fi—from the mundane (a switched-off router) to the complex (a damaged Wi-Fi module in a smartphone). For each reason, we'll provide step-by-step solutions, relevant for Android 12-15 And iOS 16-18You'll also learn how to diagnose the problem yourself and when to contact a service center.
Let's note right away: if Wi-Fi doesn't work only on one phone, and other devices (laptop, tablet) connect normally - the problem is with the smartphone. If it doesn't connect not a single device — the router or the ISP is to blame. This is key for diagnostics!
1. Router problems: why the phone can't see the network
Start checking with the router—this is the simplest and most common solution. Even if the indicators on the router are lit "as usual," this doesn't guarantee proper functionality.
- 🔌 The router is turned off or faultyCheck if the power indicator is on. If not, plug the device into a power outlet. If the indicator is flashing red, there may be a firmware error.
- 📡 Wi-Fi is disabled on the router: press the button
Wi-Fi On/Offon the case (if any) or check the settings via the web interface. - 🔄 Channel congestionIf more than 10 devices are connected to the router, it may block new connections. Disconnect unnecessary devices.
- 🛡️ Change password or encryption type: if someone has changed the security settings (for example, with
WPA2onWPA3), the phone will not be able to connect.
How to check your router:
- Reboot it (unplug it from the power outlet for 30 seconds).
- Try connecting to the network from another device (laptop, tablet).
- If no device connects, reset the router to factory settings (button
Resetfor 10 seconds).
2. Failures in phone settings: disabled Wi-Fi or airplane mode
Sometimes the problem lies in simple smartphone settings. For example, you may have accidentally activated airplane mode or turn off Wi-Fi through the notification panel.
What to check:
- ✈️ Airplane mode: Swipe down from the top of the screen and make sure the airplane icon is not active. iPhone go to
Control center. - 📶 Wi-Fi is off: in the same quick settings, turn on Wi-Fi. Android Also check the section
Settings → Network & Internet → Wi-Fi. - 🔋 Energy saving: some phones (eg Xiaomi, Samsung) disable Wi-Fi in battery saving mode. Disable it in battery settings.
- 🔄 Automatic connection to mobile data: on Android the option may be enabled in the Wi-Fi settings
Automatic switch to mobile network- turn it off.
If the phone sees the network, but doesn't connect, try:
- Forget a network: Tap on the Wi-Fi name →
Delete(orForgeton iPhone). - Reconnect: Enter your password again.
- Restart your phone.
☑️ Basic Wi-Fi diagnostics on your phone
3. IP address conflict: why does it say "Connecting..." and then disconnect?
If the phone It starts connecting to Wi-Fi, but after a few seconds it disconnects., an IP address conflict is to blame. This occurs when the router assigns your phone an address that is already taken by another device.
How to fix:
- 🔄 Restart your router and phone - This will reset the current IP addresses.
- 📱 Set up a static IP (if the problem persists):
- On Android:
Settings → Wi-Fi → [click on the network] → Advanced → IP Settings → Static. - On iPhone:
Settings → Wi-Fi → [tap the "i"] → Configure IP → Manually.
- On Android:
192.168.0.1) and in the section LAN or DHCP set the range, for example from 192.168.0.100 to 192.168.0.200.| Symptom | Probable cause | Solution |
|---|---|---|
| The connection is interrupted after 5-10 seconds | IP conflict | Reset IP or set up static |
| It keeps saying "Authentication..." | Incorrect password or encryption type | Delete the network and reconnect |
| Wi-Fi works, but there is no internet | DNS or provider settings failure | Reboot or reset your router |
| The phone doesn't see the network, but other devices do. | Wi-Fi module failure in the phone | Reset network settings or take it to a service center |
How to check the current IP address of your phone?
On Android: Settings → About phone → General information → Status → IP addressOn . iPhone: Settings → Wi-Fi → [tap the "i"] → IP address.
4. Incorrect router security settings
If the router is configured to outdated encryption type (For example, WEP) or uses incompatible protocol (For example, 802.11r (for fast roaming), the phone may refuse to connect.
What to check in the router settings (192.168.0.1 or 192.168.1.1):
- 🔒 Security type: must be
WPA2-PSKorWPA3-PSK.WEPAndOpen networkare unsafe and may not be supported. - 📶 Wi-Fi mode: install
802.11n/ac/ax(mixed mode). If it's worth it802.11ac only, old phones will not connect. - 🔄 Wi-Fi channel: if a fixed channel is selected (eg.
13), and the phone does not support it - putAuto. - 🛡️ MAC address filtering: If enabled, add the phone's MAC address to the list of allowed ones (you can find it in
Settings → About phone → General information).
Important: If your router supports WPA3, but your phone won't connect, try switching to WPA2. Some models (especially older ones) Samsung And Huawei) have problems with WPA3.
5. Software failures: network reset, firmware update
If the phone I used to connect to this network, but now it refuses to., a software glitch is to blame. This could be:
- 📱 Network settings failure (for example, after an update Android or iOS).
- 🔄 Conflict with VPN or firewall (For example, Avast or Kaspersky block the connection).
- 🗃️ Corrupt Wi-Fi cache data.
- Reset network settings:
- On Android:
Settings → System → Reset → Reset Wi-Fi, mobile network, and Bluetooth settings. - On iPhone:
Settings → General → Transfer or reset → Reset network settings.
- On Android:
- Update the firmware: go to
Settings → Software Updateand install the latest version. - Disable VPN/firewall: Temporarily disable security applications.
- Clear your cache (For Android):
Settings → Apps → [three dots] → Show system → Wi-Fi → Storage → Clear cache.
How to fix:
⚠️ Please note: Resetting network settings will delete all saved Wi-Fi passwords and paired Bluetooth devices. Please back up any important data beforehand.
6. Hardware malfunctions: when to call for service
If none of the methods helped, the problem may be in hardware phone:
- 📡 The Wi-Fi module is damaged (for example, after a fall or exposure to moisture).
- 🔋 Antenna is faulty (often found in iPhone after replacing the battery).
- 🔌 Problems with the connector or cable (relevant for disassemblable phones, for example, Samsung Galaxy S or Xiaomi Redmi).
How to diagnose:
- Try connecting to another Wi-Fi network (For example, in a cafe or at a friend's place). If it doesn't connect, the problem is with the phone.
- Turn on modem mode on your phone and try sharing your Wi-Fi. If other devices can't see your network, the module is faulty.
- Check if it works BluetoothIf this doesn't work either, there's a problem with the antenna unit.
What to do:
- 🛠️ If your phone is under warranty, contact the service center.
- 💰 If your device is out of warranty, estimate the repair cost. Replacing a Wi-Fi module costs between 3,000 and 8,000 rubles (depending on the model).
- 📱 If the phone is old (for example, iPhone 6s or Samsung Galaxy S7), it may be cheaper to buy a new one.
⚠️ Warning: Do not attempt to disassemble your phone to repair the Wi-Fi module! This requires soldering and specialized equipment. Incorrect repair may completely damage the device.
7. Problems with the provider: blocking and technical work
Sometimes the phone doesn't connect to Wi-Fi it's not your fault, but due to problems on the Internet provider's side. This could be:
- 🚫 MAC address blocking (the provider tied the Internet to a specific device).
- 🔧 Technical work (cable break, station failure).
- 💰 Account balance (the provider has disabled access).
- 📡 Change of tariff (for example, transition to
IPv6, which your router does not support).
How to check:
- Connect the provider's cable directly to the computer (without a router). If the internet works, the problem is with the router.
- Call your provider's support and check if there is any blockages or technical work.
- Check it out personal account on the provider's website - there may be a notice of debt or tariff change.
⚠️ Please note: If your provider uses MAC address binding, you may need to reactivate the service after replacing your router or phone. This is usually done through your personal account or by calling support.
FAQ: Frequently asked questions about Wi-Fi issues on your phone
Why does my phone say "Saved, WPA/WPA2 protected" but won't connect?
This means that the phone sees the network and saves its settings, but cannot be authenticated. Reasons:
- Incorrect password (check case and symbols).
- Incompatible encryption type (for example, the router is configured to
WPA3, and the phone only supportsWPA2). - Network settings failure (try "forgetting" the network and connecting again).
Solution: Reset the Wi-Fi settings on your phone or change the security type on your router.
My phone connects to Wi-Fi, but the internet isn't working. What should I do?
If there is an exclamation mark or the message "No Internet access" next to the network name, the problem may be:
- Router (reboot it).
- DNS servers (try to manually enter
8.8.8.8And8.8.4.4in IP settings). - Provider (check if the Internet is paid for).
Also try connecting to a different network - if the internet works there, the problem is with your router or provider.
After updating Android/iOS, my phone stopped detecting Wi-Fi. How can I fix this?
OS updates sometimes reset network settings or introduce errors into Wi-Fi drivers. Try:
- Restart your phone.
- Reset network settings (
Settings → System → Reset). - Roll back to the previous OS version (if possible).
- Contact the manufacturer's support (if the problem is widespread, they may release a patch).
On Android You can also try clearing the application cache. Wi-Fi in the settings.
Is it possible to fix Wi-Fi on your phone yourself?
If there is a problem software (settings error, IP conflict) - yes, you can fix it yourself using the instructions in this article. If the problem hardware (the module, antenna, cable are damaged) NoFor repairs you will need:
- Special equipment (soldering station, tester).
- Spare parts (new Wi-Fi module or antenna).
- Experience in disassembling phones (risk of damaging other components).
Self-repair without the necessary skills almost always leads to a worsening of the problem.
Why won't my iPhone connect to Wi-Fi after replacing the battery?
This is a common problem. iPhone (especially models 6/6s/7/8). The reason is damage to the antenna cable When replacing the battery, the Wi-Fi/Bluetooth cable runs close to the battery, and a careless technician could damage it.
Solutions:
- Return to the service center and ask them to check the cable.
- If the repair warranty is valid, demand a free repair.
- If the cable is damaged, it will have to be replaced (cost ~2,000–4,000 ₽).